The reason for this is about the "/ var" directory of NMIS. Which I've seen that I have little space left on the server. I do this query because I'm not very skilled in the linux administration part and I wanted to know if I can delete the next file.

When reviewing the files of said directory, I observed that "spool" is the directory with the largest amount of space used. when reviewing this meeting that "mail" has used 11 GB and within this other is the "root" file. So I would like to know if I can delete the file "/var/spool/mail/root". Since this is using 11 GB of the 16.58 GB that I currently have.

As I indicated in the top part I make this query because I am not very proficient in the management part of server linux and I would like to know before deleting that file. That does not affect the operation of the server.